The 20 Standard Amino Acids

Vocabulary flashcards covering the names, 3-letter abbreviations, 1-letter abbreviations, and side chain classifications for the 20 standard amino acids.

Alanine

An amino acid with an aliphatic side chain (non-aromatic hydrocarbon); abbreviated as Ala or A.

Valine

An amino acid with an aliphatic side chain (non-aromatic hydrocarbon); abbreviated as Val or V.

Leucine

An amino acid with an aliphatic side chain (non-aromatic hydrocarbon); abbreviated as Leu or L.

Isoleucine

An amino acid with an aliphatic side chain (non-aromatic hydrocarbon); abbreviated as Ile or I.

Glycine

An amino acid with a non-polar side chain; abbreviated as Gly or G.

Proline

An amino acid with a non-polar side chain; abbreviated as Pro or P.

Cysteine

An amino acid with a non-polar side chain; abbreviated as Cys or C.

Methionine

An amino acid with a non-polar side chain; abbreviated as Met or M.

Histidine

An amino acid with an aromatic side chain; abbreviated as His or H.

Phenylalanine

An amino acid with an aromatic side chain; abbreviated as Phe or F.

Tyrosine

An amino acid with an aromatic side chain; abbreviated as Tyr or Y.

Tryptophan

An amino acid with an aromatic side chain; abbreviated as Trp or W.

Asparagine

An amino acid with a polar side chain; abbreviated as Asn or N.

Glutamine

An amino acid with a polar side chain; abbreviated as Gln or Q.

Serine

An amino acid with a polar side chain; abbreviated as Ser or S.

Threonine

An amino acid with a polar side chain; abbreviated as Thr or T.

Aspartic acid

An amino acid with a charged side chain; abbreviated as Asp or D.

Glutamic acid

An amino acid with a charged side chain; abbreviated as Glu or E.

Lysine

An amino acid with a charged side chain; abbreviated as Lys or K.

Arginine

An amino acid with a charged side chain; abbreviated as Arg or R.

Aliphatic side chains (non-aromatic hydrocarbons)

A category of amino acid side chains consisting of non-aromatic hydrocarbons, including Alanine, Valine, Leucine, and Isoleucine.

Non-polar side chains

A group of amino acids with hydrophobic side chains, including Glycine, Proline, Cysteine, and Methionine.

Aromatic side chains

A group of amino acids containing aromatic ring structures, including Histidine, Phenylalanine, Tyrosine, and Tryptophan.

Polar side chains

A group of uncharged amino acids with hydrophilic properties, including Asparagine, Glutamine, Serine, and Threonine.

Charged side chains

A group of amino acids containing acidic or basic charged groups, including Aspartic acid, Glutamic acid, Lysine, and Arginine.